99extra Underwear, 5 Colors Men's Multihole Super Breath Bikini Front rise:95% Model/5% Spandex Mesh: 85% Ice Fiber/ 15% Spandex Imported Ice fiber is cool, soft and smooth. It is not easy to absorb moisture, not looks like cotton underwear, feels wet whole the days. Cooperate with mesh design, heat drop away quickly. You will find hot summer is no longer terrible. Different bikini desgin and meterial maybe is not same with your usual size. Please refer our waist measurement data. Detail measurement method please read product description. If your hip is very stronger, please think about upper one size. Better for hand wash. You will found ice fiber is very easy to clean. Doctor advised, a underwear don't use more than 6 months, it will become very dirty although you repeated wash it.